Photoexcited carrier behavior in modulation-doped multiple narrow GaAs-AlxGa1-xAs quantum-well structures which vary in quantum-well width and doping concentration is investigated with Monte Carlo simulations. The model includes scattering of Gamma-valley subband electrons by confined slab and interface-polar-optical phonons and between Gamma-valley and L-valley electrons via optical-deformation-potential phonons. The model closely predicts time constants for electron relaxation found experimentally and shows that the effect of including the L-valley transitions in the Monte Carlo simulation is essential.
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Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
Gan, KG
Sun, CK
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机构:Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
Sun, CK
DenBaars, SP
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机构:Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
DenBaars, SP
Bowers, JE
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机构:Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA